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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cc/symmetries.h"
#include <array>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using ::testing::ElementsAreArray;
namespace minigo {
namespace symmetry {
namespace {
TEST(SymmetriesTest, TestRot90_1) {
// clang-format off
const std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
4, 8, 12, 16,
3, 7, 11, 15,
2, 6, 10, 14,
1, 5, 9, 13,
}};
// clang-format on
std::array<float, 16> actual;
Rot90<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestRot180_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
16, 15, 14, 13,
12, 11, 10, 9,
8, 7, 6, 5,
4, 3, 2, 1,
}};
// clang-format on
std::array<float, 16> actual;
Rot180<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 16> tmp;
Rot90<4, 1>(original.data(), tmp.data());
Rot90<4, 1>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestRot270_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
13, 9, 5, 1,
14, 10, 6, 2,
15, 11, 7, 3,
16, 12, 8, 4,
}};
// clang-format on
std::array<float, 16> actual;
Rot270<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 16> tmp1, tmp2;
Rot90<4, 1>(original.data(), tmp1.data());
Rot90<4, 1>(tmp1.data(), tmp2.data());
Rot90<4, 1>(tmp2.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlip_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
1, 5, 9, 13,
2, 6, 10, 14,
3, 7, 11, 15,
4, 8, 12, 16,
}};
// clang-format on
std::array<float, 16> actual;
Flip<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot90_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
13, 14, 15, 16,
9, 10, 11, 12,
5, 6, 7, 8,
1, 2, 3, 4,
}};
// clang-format on
std::array<float, 16> actual;
FlipRot90<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 16> tmp;
Flip<4, 1>(original.data(), tmp.data());
Rot90<4, 1>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot180_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
16, 12, 8, 4,
15, 11, 7, 3,
14, 10, 6, 2,
13,
8000
9, 5, 1
}};
// clang-format on
std::array<float, 16> actual;
FlipRot180<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 16> tmp;
Flip<4, 1>(original.data(), tmp.data());
Rot180<4, 1>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot270_1) {
// clang-format off
std::array<float, 16> original = {{
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
}};
std::array<float, 16> expected = {{
4, 3, 2, 1,
8, 7, 6, 5,
12, 11, 10, 9,
16, 15, 14, 13,
}};
// clang-format on
std::array<float, 16> actual;
FlipRot270<4, 1>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 16> tmp;
Flip<4, 1>(original.data(), tmp.data());
Rot270<4, 1>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestRot90_3) {
// clang-format off
const std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
41, 42, 43, 81, 82, 83, 121, 122, 123, 161, 162, 163,
31, 32, 33, 71, 72, 73, 111, 112, 113, 151, 152, 153,
21, 22, 23, 61, 62, 63, 101, 102, 103, 141, 142, 143,
11, 12, 13, 51, 52, 53, 91, 92, 93, 131, 132, 133,
}};
// clang-format on
std::array<float, 48> actual;
Rot90<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestRot180_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
161, 162, 163, 151, 152, 153, 141, 142, 143, 131, 132, 133,
121, 122, 123, 111, 112, 113, 101, 102, 103, 91, 92, 93,
81, 82, 83, 71, 72, 73, 61, 62, 63, 51, 52, 53,
41, 42, 43, 31, 32, 33, 21, 22, 23, 11, 12, 13,
}};
// clang-format on
std::array<float, 48> actual;
Rot180<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 48> tmp;
Rot90<4, 3>(original.data(), tmp.data());
Rot90<4, 3>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestRot270_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
131, 132, 133, 91, 92, 93, 51, 52, 53, 11, 12, 13,
141, 142, 143, 101, 102, 103, 61, 62, 63, 21, 22, 23,
151, 152, 153, 111, 112, 113, 71, 72, 73, 31, 32, 33,
161, 162, 163, 121, 122, 123, 81, 82, 83, 41, 42, 43,
}};
// clang-format on
std::array<float, 48> actual;
Rot270<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 48> tmp1, tmp2;
Rot90<4, 3>(original.data(), tmp1.data());
Rot90<4, 3>(tmp1.data(), tmp2.data());
Rot90<4, 3>(tmp2.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlip_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
11, 12, 13, 51, 52, 53, 91, 92, 93, 131, 132, 133,
21, 22, 23, 61, 62, 63, 101, 102, 103, 141, 142, 143,
31, 32, 33, 71, 72, 73, 111, 112, 113, 151, 152, 153,
41, 42, 43, 81, 82, 83, 121, 122, 123, 161, 162, 163,
}};
// clang-format on
std::array<float, 48> actual;
Flip<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot90_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
}};
// clang-format on
std::array<float, 48> actual;
FlipRot90<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 48> tmp;
Flip<4, 3>(original.data(), tmp.data());
Rot90<4, 3>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot180_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
161, 162, 163, 121, 122, 123, 81, 82, 83, 41, 42, 43,
151, 152, 153, 111, 112, 113, 71, 72, 73, 31, 32, 33,
141, 142, 143, 101, 102, 103, 61, 62, 63, 21, 22, 23,
131, 132, 133, 91, 92, 93, 51, 52, 53, 11, 12, 13,
}};
// clang-format on
std::array<float, 48> actual;
FlipRot180<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 48> tmp;
Flip<4, 3>(original.data(), tmp.data());
Rot180<4, 3>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, TestFlipRot270_3) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
std::array<float, 48> expected = {{
41, 42, 43, 31, 32, 33, 21, 22, 23, 11, 12, 13,
81, 82, 83, 71, 72, 73, 61, 62, 63, 51, 52, 53,
121, 122, 123, 111, 112, 113, 101, 102, 103, 91, 92, 93,
161, 162, 163, 151, 152, 153, 141, 142, 143, 131, 132, 133,
}};
// clang-format on
std::array<float, 48> actual;
FlipRot270<4, 3>(original.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
std::array<float, 48> tmp;
Flip<4, 3>(original.data(), tmp.data());
Rot270<4, 3>(tmp.data(), actual.data());
EXPECT_THAT(actual, ElementsAreArray(expected));
}
TEST(SymmetriesTest, Inverses) {
for (int i = 0; i < kNumSymmetries; ++i) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
// clang-format on
Symmetry sym = static_cast<Symmetry>(i);
std::array<float, 48> transformed, inverse;
ApplySymmetry<4, 3>(sym, original.data(), transformed.data());
ApplySymmetry<4, 3>(Inverse(sym), transformed.data(), inverse.data());
EXPECT_THAT(inverse, ElementsAreArray(original));
}
}
TEST(SymmetriesTest, NchwOutput) {
for (int i = 0; i < kNumSymmetries; ++i) {
// clang-format off
std::array<float, 48> original = {{
11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43,
51, 52, 53, 61, 62, 63, 71, 72, 73, 81, 82, 83,
91, 92, 93, 101, 102, 103, 111, 112, 113, 121, 122, 123,
131, 132, 133, 141, 142, 143, 151, 152, 153, 161, 162, 163,
}};
// clang-format on
Symmetry sym = static_cast<Symmetry>(i);
std::array<float, 48> nhwc_output, nchw_output;
ApplySymmetry<4, 3>(sym, original.data(), nhwc_output.data());
using OutIter = NchwOutputIterator<4, 3, float>;
ApplySymmetry<4, 3>(sym, original.data(), OutIter(nchw_output.data()));
for (int c = 0; c < 3; ++c) {
for (int j = 0; j < 16; ++j) {
EXPECT_EQ(nchw_output[c * 16 + j], nhwc_output[j * 3 + c]);
}
}
}
}
} // namespace
} // namespace symmetry
} // namespace minigo